WGU D440 Final Exam (Latest 2026
Update) Health and Wellness Through
Nutritional Science Review | Questions
and Answers | Grade A| 100% Correct
(Verified Solutions)||PLUS RATIONALES||
GUARANTEED PASS!!
1.
Q: The main function of carbohydrates is to:
A) Build muscle
B) Provide energy
C) Store fat
D) Synthesize DNA
A: B
Rationale: Carbohydrates are the body’s primary source of energy, especially for brain and
muscle function.
2.
Q: Which nutrient class provides the most energy per gram?
A) Carbohydrates
B) Proteins
C) Fats
D) Vitamins
A: C
Rationale: Fats provide 9 kcal per gram, whereas carbohydrates and proteins provide 4 kcal per
gram.
3.
,Q: Essential amino acids are:
A) Made by the body
B) Obtained through diet
C) Not required for health
D) Only found in plants
A: B
Rationale: Essential amino acids cannot be synthesized by the body and must come from food.
4.
Q: Fiber is classified as a:
A) Simple sugar
B) Digestible carbohydrate
C) Complex carbohydrate that resists digestion
D) Fat
A: C
Rationale: Fiber is a carbohydrate that the body cannot digest but is crucial for gut health and
satiety.
5.
Q: Lipids are important because they:
A) Provide insulation and cell membrane structure
B) Cause immediate fat gain
C) Are not essential nutrients
D) Provide no energy
A: A
Rationale: Lipids play structural and metabolic roles in the body and provide long-term energy.
6.
Q: Water is involved in all of the following except:
A) Temperature regulation
B) Digestive processes
C) Oxygen transport
D) Waste elimination
, A: C
Rationale: While water is essential for transport, oxygen transport is a function of hemoglobin,
not water itself.
7.
Q: A nutrient that must be consumed in small amounts but is required for normal function is
called a:
A) Macronutrient
B) Micronutrient
C) Enzyme
D) Hormone
A: B
Rationale: Vitamins and minerals are micronutrients — needed in small quantities.
8.
Q: Glycemic index measures:
A) Protein quality
B) Rate of carbohydrate digestion and blood glucose response
C) Fat oxidation
D) Mineral absorption
A: B
Rationale: Lower GI foods cause a slower rise in blood sugar.
9.
Q: The DRI (Dietary Reference Intake) includes all of the following except:
A) RDA
B) AI
C) UL
D) BMI
A: D
Rationale: BMI is a health assessment tool, not a nutrient reference.
Update) Health and Wellness Through
Nutritional Science Review | Questions
and Answers | Grade A| 100% Correct
(Verified Solutions)||PLUS RATIONALES||
GUARANTEED PASS!!
1.
Q: The main function of carbohydrates is to:
A) Build muscle
B) Provide energy
C) Store fat
D) Synthesize DNA
A: B
Rationale: Carbohydrates are the body’s primary source of energy, especially for brain and
muscle function.
2.
Q: Which nutrient class provides the most energy per gram?
A) Carbohydrates
B) Proteins
C) Fats
D) Vitamins
A: C
Rationale: Fats provide 9 kcal per gram, whereas carbohydrates and proteins provide 4 kcal per
gram.
3.
,Q: Essential amino acids are:
A) Made by the body
B) Obtained through diet
C) Not required for health
D) Only found in plants
A: B
Rationale: Essential amino acids cannot be synthesized by the body and must come from food.
4.
Q: Fiber is classified as a:
A) Simple sugar
B) Digestible carbohydrate
C) Complex carbohydrate that resists digestion
D) Fat
A: C
Rationale: Fiber is a carbohydrate that the body cannot digest but is crucial for gut health and
satiety.
5.
Q: Lipids are important because they:
A) Provide insulation and cell membrane structure
B) Cause immediate fat gain
C) Are not essential nutrients
D) Provide no energy
A: A
Rationale: Lipids play structural and metabolic roles in the body and provide long-term energy.
6.
Q: Water is involved in all of the following except:
A) Temperature regulation
B) Digestive processes
C) Oxygen transport
D) Waste elimination
, A: C
Rationale: While water is essential for transport, oxygen transport is a function of hemoglobin,
not water itself.
7.
Q: A nutrient that must be consumed in small amounts but is required for normal function is
called a:
A) Macronutrient
B) Micronutrient
C) Enzyme
D) Hormone
A: B
Rationale: Vitamins and minerals are micronutrients — needed in small quantities.
8.
Q: Glycemic index measures:
A) Protein quality
B) Rate of carbohydrate digestion and blood glucose response
C) Fat oxidation
D) Mineral absorption
A: B
Rationale: Lower GI foods cause a slower rise in blood sugar.
9.
Q: The DRI (Dietary Reference Intake) includes all of the following except:
A) RDA
B) AI
C) UL
D) BMI
A: D
Rationale: BMI is a health assessment tool, not a nutrient reference.
